Draft-rigging



E. GOLDBERGER. DRAFT RIGGI'NG.

APPLICATION FILED muse, 1920.

Patented July 5, 1921.

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DRAFT-.RIGGING.

Application filed January 30, 1920. Serial No. 355,204.

To all whom it may concern:

Be it known that I, ERNEST Gonnnnnenn, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Draft- Rigging, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to draft rigging particularly designed for use in connection with tractors or other self-propelled vehicles, and it is the object of the invention to provide a construction which may be given a limited freedom for universal pivotal adjustment when used for drawing certain implements and which may be secured in fixed positlon for use where backing is required. To thls end the invention consists in the construction as hereinafter set forth.

In the drawings:

Figure 1 is a side elevation of a tractor to which my improved draft rigging is applied, and showing the same as provldlng freedom for universal movement; 7

Fig. 2 is a plan view of the construction as shown in Fig. 1; and

Fig. 3 is a view similar to Fig. 1, showing the device adjusted for rigidity.

A is the draw-bar which, as specifically shown, is formed of two members A and A having their forward ends spread apart and twisted to form a bifurcated bearing B. C is a bearing block embraced by the furcations and pivotally secured thereto by a pin D. E is a bifurcated bearing on some rigid part of the tractor, which embraces the block C and is pivotally secured thereto by a pin F. The pins F and D are in planes perpendicular to each other, so as to provlde be tween the bearing E and the draft bar'a universal pivotal joint. 7

G and G are bars secured'to the draft bar A near its rear end by means of the pin or bolt H. These arms are bent or spread apart laterally and at their free ends are apertured for attachment by pins I to chains, or other flexible connections J. The

latter have their opposite ends secured by pins K to apertured bearings L upon arigid portion of the tractor frame. The arrangement is such that the universal pivotal con nection between the forward end of the draft bar and the tractor frame will provide. free- ]cl'o n f r either vert fi al 9 l t ral m v Speeification of Letters Patent.

atented M 5, 192i.

ment of the rear end thereof, while the arms G and G and'flexible connections. J serve to limit thismovement.

lVhen the tractor is used for drawing a trailer, it issometimes necessary to back and where the draft bar is pivoted, this operation is difficult. I have, therefore, provided for converting the universal pivoted draft bar .into a rigid structure, which is accomplished by removing the chains or flexible connections J and attaching the arms G and G directly by the pins K to the bearings L. l Vhen thus adjusted, there is formed in effect a triangular rigidframe, which holds the rear end of the draft bar from either vertical or lateral movement.

My improved draft rigging may be used forvarious' purposes, but it is particularly useful for the alternative attachment of agricultural implements, such as plows, wh ch require a free flexibility for pivotal actlon and trailers, the draft'bars' of which with a clevis or other attachment means.

-What I claim as myin'vention is l.- The combination with a draftvehicle provided with three draft attachment bearngs in rigid relation to each other, ofa

draft bar, universal pivotal connection between the forward end of said draft bar and one ofsaid bearings, bracebars-attaohed to the rear of said draft bar and engageable ,l'espectively with the other two, bearings to form a rigid connection therewith, and flexible extensions for; said brace bars attachable to said bearings, permitting limited freedom for universal movement. 2. The combination with a draft vehicle, of adraft rigging comprising a main draft bar universally pivotally connected at its forward end to said draft vehicle, a pair of brace arms attached to the rear portion of said draft bar and extending laterally on opposite sides thereof, means for rigidly attaching the ends of said brace bars to said draft vehicle, and flexible extensions for said brace bars insertible betweenthe same and the points of attachment to said vehicle for providing limited universal freedom of movement. r

3, The combination ofa draft vehicle and may be rigidly attached tothe-tr'actor. Any' if three attachment bearings rigidly secured brace rods directly to the other attachment thereto and not in a straight line, of a rigid bearings, and flexible means for attaching draft bar pivotally secured at one end to an said brace bars to said bearings, permitting 10 intermediate attachment bearing, a pair of limited freedom for universal movement. oppositely extending brace rods secured to In testimony whereof I affiX my signature.

the rear portion of the draft bar, means for securing the forward end portions of the ERNEST GOLDBERGER. 

